#include <stdio.h>
main()
{
    int a,b,c,d;
    printf("Please enter a number:");
    scanf ("%d",&a);
    b = a*a*a;
    printf("%d*%d*%d=%d=",a,a,a,b);
    for (d=0,c=0;c<a;c++)
    {
        d+=a*a-a+1+c*2;;
        printf (c?"+%d" : "%d",a*a-a+1+c*2);    
    }
    if (d==b) printf(" Y\n");
    else printf(" N\n");
}